<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>animation复合属性</title>
  <style>
    .box {
      width: 200px;
      height: 100px;
      background-color: pink;
    }

    /* 宽度 从 200 变化到 800 */
    @keyframes change {
      from {
        width: 200px;
      }

      to {
        width: 800px;
      }
    }
  </style>
</head>

<body>
  <div class="box"></div>
</body>

</html>